Currently working app:
https://appeven.com/
How to install:
Go to the above link and install the app, after installed you have to tap on allow and connect to the vpn.
then for check just go to in the settings - VPN If you see that the status is connected, This means that you are connected to the anti-revoke server.
NOTE: This method is untested and shared by one of our forum member, We don't know the security and usability of this application, because it's linked to third-party server, we can't guarantee anything.